Set cruise at 65then suddenly Rx felt bumped in a downshift
dash lit up and drove sluggish
obd read both codes. cleared both codes then Changed Tran fluid for start as could be a trigger.

30 miles later, repeated symptoms but with 2700rpm at 50mph, 8th gear.

Went to stealership, tsb covered for code, but diagnostic not.

Cpu flashed and $200 later, resolved.

didn’t see any write ups on this.

What year?

2017 rx350

After Stealership flashed ECU, driving a few days later, the rpm jumped to 3000 @50mph. Rpm Would not drop even when going downhill. Stealership said the ECU is learning and stories stories. Took picture and return vehicle to stealership.
they came back and said no issues and still photo serves no purpose.
happened again the following day, this time I recorded rpm plus dash. Check OBD and codes there again
took Rx back to stealership and kept for 3 days. Tech drove car and came back that they replicated problem and will replace Tranny.

had less than 2k miles before the power train expire (60kmiles)

the replacement would have cost me if not under warantee over $7.5k.

not happy with their service dept.
mid wifey was driving she wouldn’t have noticed

Well, all's well that end's well, right?

will see when pick up and going over car with a fine tooth comb….